/* names1.c -- uses pointers to a structure */
#include <stdio.h>
#include <string.h>

#define NLEN 30
struct namect {
	char fname[NLEN];
	char lname[NLEN];
	int letters;
};

void getinfo(struct namect *);
void makeinfo(struct namect *);
void showinfo(const struct namect *);
char * s_gets(char * st, int n);

int main(void)
{
	struct namect person;

	getinfo(&person);
	makeinfo(&person);
	showinfo(&person);
	return 0;
}

void getinfo(struct namect * pst)
{
	printf("Please enter your first name.\n");
	s_gets(pst->fname, NLEN);
	printf("Please enter your last name.\n");
	s_gets(pst->lname, NLEN);
}

void makeinfo(struct namect * pst)
{
	pst->letters = strlen(pst->fname) +
	strlen(pst->lname);
}

void showinfo(const struct namect * pst)
{
	printf("%s %s, your name contians %d letters.\n",
			pst->fname, pst->lname, pst->letters);
}

char * s_gets(char * st, int n)
{
	char * ret_val;
	char * find;

	ret_val = fgets(st, n, stdin);
	if (ret_val)
	{
		find = strchr(st, '\n');	// look for newline
		if (find)					// if the address is not NULL,
			*find = '\0';			// place a null character there
		else
			while (getchar() != '\n')
				continue;			// dispose of rest of line
	}
	return ret_val;
}